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United States Patent | 6,200,438 |
Clasen ,   et al. | March 13, 2001 |
Anti-corrosive apparatus cover with an improved detachable wall-covering for new or used covers of electrolytic cells.
Inventors: | Clasen; Peter (Krefeld, DE); Venghaus; Stefan (Kalkar, DE) |
Assignee: | Bayer Aktiengesellschaft (Leverkusen, DE) |
Appl. No.: | 331289 |
Filed: | June 17, 1999 |
PCT Filed: | January 3, 1998 |
PCT NO: | PCT/EP98/00018 |
371 Date: | June 17, 1999 |
102(e) Date: | June 17, 1999 |
PCT PUB.NO.: | WO98/30737 |
PCT PUB. Date: | July 16, 1998 |
Jan 10, 1997[DE] | 197 00 534 |
Current U.S. Class: | 204/279; 204/232; 204/242 |
Intern'l Class: | C25B 009/00 |
Field of Search: | 204/232,242,279,219,250 |
3919071 | Nov., 1975 | Mose | 204/219. |
4087343 | May., 1978 | Custer et al. | 204/286. |
4283263 | Aug., 1981 | Mirabelli | 204/219. |
4443315 | Apr., 1984 | Iijima et al. | 204/253. |
Foreign Patent Documents | |||
23 40 240 B2 | Mar., 1975 | DE. | |
30 08 453 C2 | Sep., 1980 | DE. | |
31 16 193 A1 | Feb., 1982 | DE. | |
0655520 | Jun., 1995 | EP. | |
1132282 | Oct., 1968 | GB. |